Guaranteed Success in JNCIP-SP JN0-664 Exam Dumps
Juniper JN0-664 Daily Practice Exam New 2024 Updated 99 Questions
The JN0-664 exam is intended for individuals who have already obtained the Juniper JNCIA-Junos certification and the Juniper JNCIS-SP certification. Service Provider, Professional (JNCIP-SP) certification exam provides a deeper understanding of advanced routing and switching technologies, including BGP, OSPF, and MPLS.
Juniper JN0-664 exam is designed to test the knowledge and skills of service provider professionals who work with Juniper Networks’ technologies. Service Provider, Professional (JNCIP-SP) certification validates the understanding of service provider routing and switching technologies and their related platform configuration and troubleshooting skills.
NEW QUESTION # 22
Exhibit.
Referring to the exhib.t, what must be changed to establish a Level 1 adjacency between routers R1 and R2?
- A. Change the level 1 disable parameter under the R2 protocols isis interface ge-1/2/3 .0 hierarchy to the level 2 disable parameter
- B. Remove the level i disable parameter under the R2 protocols isis interface loo . 0 configuration hierarchy.
- C. Change the level l disable parameter under the R1 protocols isis interface lo0.0 hierarchy to the level 2 disable parameter.
- D. Add IP addresses to the interface ge-l/2/3 unit 0 family iso hierarchy on both R1 and R2.
Answer: B
Explanation:
Explanation
IS-IS routers can form Level 1 or Level 2 adjacencies depending on their configuration and network topology.
Level 1 routers are intra-area routers that share the same area address with their neighbors. Level 2 routers are inter-area routers that can connect different areas. Level 1-2 routers are both intra-area and inter-area routers that can form adjacencies with any other router.
In the exhibit, R1 and R2 are in different areas (49.0001 and 49.0002), so they cannot form a Level 1 adjacency. However, they can form a Level 2 adjacency if they are both configured as Level 1-2 routers. R1 is already configured as a Level 1-2 router, but R2 is configured as a Level 1 router only, because of the level 1 disable command under the lo0.0 interface. This command disables Level 2 routing on the loopback interface, which is used as the router ID for IS-IS.
Therefore, to establish a Level 1 adjacency between R1 and R2, the level 1 disable command under the R2 protocols isis interface lo0.0 hierarchy must be removed. This will enable Level 2 routing on R2 and allow it to form a Level 2 adjacency with R1.
NEW QUESTION # 23
Referring to the exhibit, which statement is true?
- A. The 10.101.1.0/24 route will be shared if the vrf-table-label parameter is configured.
- B. The 10.101.1.0/24 route will be shared if the auto-export parameter is configured.
- C. The 10.101.1.0/24 route will only be shared if BGP is configured in the routing instance.
- D. The 10.101.1.0/24 route will be shared if there are other VRFs that use the same route target community.
Answer: D
NEW QUESTION # 24
You want to ensure that L1 IS-IS routers have only the most specific routes available from L2 IS- IS routers.
Which action accomplishes this task?
- A. Configure the ignore-attached-bit parameter on all L1 routers.
- B. Configure all routers to be L1.
- C. Configure all routers to allow wide metrics.
- D. Configure the ignore-attached-bit parameter on all L2 routers.
Answer: A
NEW QUESTION # 25
Exhibit
You want Site 1 to access three VLANs that are located in Site 2 and Site 3 The customer-facing interface on the PE-1 router is configured for Ethernet-VLAN encapsulation.
What is the minimum number of L2VPN routing instances to be configured to accomplish this task?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Explanation
To allow Site 1 to access three VLANs that are located in Site 2 and Site 3, you need to configure three L2VPN routing instances on PE-1, one for each VLAN. Each L2VPN routing instance will have a different VLAN ID and a different VNI for VXLAN encapsulation. Each L2VPN routing instance will also have a different vrf-target export value to identify which VPN routes belong to which VLAN. This way, PE-1 can forward traffic from Site 1 to Site 2 and Site 3 based on the VLAN tags and VNIs.
NEW QUESTION # 26
You must alter class-of-service values in packets on the outbound interface of an edge router.
In this scenario, which CoS component allows you to accomplish this task?
- A. scheduler
- B. forwarding classes
- C. rewrite rules
- D. output policer
Answer: C
NEW QUESTION # 27
You are configuring anycast RP for load balancing and redundancy in your PIM-SM domain. You want to share active sources between RPs.
In this scenario, what are two solutions that will accomplish this task? (Choose two.)
- A. Configure anycast PIM with the rp-set statement on each source DR router.
- B. Configure MSDP on each source DR router.
- C. Configure MSDP on each RP router.
- D. Configure anycast PIM with the rp-set statement on each RP router.
Answer: C,D
NEW QUESTION # 28
A packet is received on an interface configured with transmission scheduling. One of the configured queues In this scenario, which two actions will be taken by default on a Junos device? (Choose two.)
- A. The exceeding queue will be considered to have positive bandwidth credit
- B. The exceeding queue will be considered to have negative bandwidth credit.
- C. The excess traffic will use bandwidth available from other queueses
- D. The excess traffic will be discarded
Answer: B,D
Explanation:
Explanation
Transmission scheduling is a CoS feature that allows you to allocate bandwidth among different queues on an interface. Each queue has a configured bandwidth percentage that determines how much of the available bandwidth it can use. If a queue exceeds its allocated bandwidth, it is considered to have negative bandwidth credit and its excess traffic will be discarded by default. If a queue does not use all of its allocated bandwidth, it is considered to have positive bandwidth credit and its unused bandwidth can be shared by other queues.
NEW QUESTION # 29
Which two EVPN route types are used to advertise a multihomed Ethernet segment? (Choose two.)
- A. Type 4
- B. Type 3
- C. Type 2
- D. Type 1
Answer: A,D
NEW QUESTION # 30
You are configuring a BGP signaled Layer 2 VPN across your MPLS enabled core network. Your PE-2 device connects to two sites within the same VPN.
In this scenario, which statement is correct?
- A. By default on PE-2, the site's local ID is automatically assigned a value of 0 and must be configured to match the total number of attached sites.
- B. You must use separate physical interfaces to connect PE-2 to each site.
- C. By default on PE-2, the remote site IDs are automatically assigned based on the order that you add the interfaces to the site configuration.
- D. You must create a unique Layer 2 VPN routing instance for each site on the PE-2 device.
Answer: C
NEW QUESTION # 31
Which two statements are correct about the class-of-service configuration shown in the exhibit?
(Choose two.)
- A. The best-effort queue can transmit more than 40% of the total bandwidth on the ge-0/0/0 interface, if no other queue is using that bandwidth.
- B. Incoming traffic will be classified using the default classifier.
- C. Incoming traffic will not be classified because no classifier exists in the configuration.
- D. The best-effort queue can never transmit more than 40% of the total bandwidth on the ge-0/0/0 interface, even if that bandwidth is available.
Answer: A,B
NEW QUESTION # 32
Which statement is correct about IS-IS when it performs the Dijkstra algorithm?
- A. When a new neighbor ID in the tree database matches a router ID in the LSDB, the neighbor ID is moved to the candidate database
- B. The local router moves its own local tuples into the candidate database
- C. Tuples with the lowest cost are moved from the tree database to the LSDB.
- D. The algorithm will stop processing once the tree database is empty.
Answer: B
Explanation:
IS-IS is a link-state routing protocol that uses the Dijkstra algorithm to compute the shortest paths between nodes in a network. The Dijkstra algorithm maintains three data structures: a tree database, a candidate database, and a link-state database (LSDB). The tree database contains the nodes that have been visited and their shortest distances from the source node. The candidate database contains the nodes that have not been visited yet and their tentative distances from the source node. The LSDB contains the topology information of the network, such as the links and their costs.
The Dijkstra algorithm works as follows:
The local router moves its own local tuples into the tree database. A tuple consists of a node ID, a distance, and a parent node ID. The local router's tuple has a distance of zero and no parent node.
The local router moves its neighbors' tuples into the candidate database. The neighbors' tuples have distances equal to the costs of the links to them and parent node IDs equal to the local router's node ID.
The local router selects the tuple with the lowest distance from the candidate database and moves it to the tree database. This tuple becomes the current node.
The local router updates the distances of the current node's neighbors in the candidate database by adding the current node's distance to the link costs. If a shorter distance is found, the parent node ID is also updated.
The algorithm repeats steps 3 and 4 until either the destination node is reached or the candidate database is empty.
NEW QUESTION # 33
Exhibit
You are attempting to summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500. You implement the export policy shown in the exhibit and all routes from the routing table stop being advertised.
In this scenario, which two steps would you take to summarize the route in BGP? (Choose two.)
- A. Add the set protocols bgp family inet unicast add-path command to allow additional routes to the RIB tables. -
- B. Remove the from protocol bgp command from the export policy.
- C. Replace exact in the export policy with orlonger.
- D. Add the set routing-options static route 203.0.113.123/25 discard command.
Answer: C,D
Explanation:
To summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500, you need to do the following:
Add the set routing-options static route 203.0.113.128/25 discard command. This creates a static route for the summary prefix and discards any traffic destined to it. This is necessary because BGP can only advertise routes that are present in the routing table.
Replace exact in the export policy with orlonger. This allows R8 to match and advertise any route that is equal or more specific than the summary prefix. The exact term only matches routes that are exactly equal to the summary prefix, which is not present in the routing table.
NEW QUESTION # 34
You are configuring schedulers to define the class-of-service properties of output queues. You want to control packet drops during periods of congestion.
In this scenario, which CoS configuration parameter would be used to accomplish this task?
- A. buffer size
- B. drop profile
- C. priority
- D. shaping rate
Answer: B
NEW QUESTION # 35
Which two statements about IS-IS are correct? (Choose two.)
- A. CSNPs contain only descriptions of LSPs.
- B. PSNPs contain only descriptions of LSPs.
- C. CSNPs are flooded periodically
- D. PSNPs are flooded periodically.
Answer: B,C
Explanation:
Explanation
IS-IS is an interior gateway protocol that uses link-state routing to exchange routing information among routers within a single autonomous system. IS-IS uses two types of packets to synchronize link-state databases among routers: Link State Packets (LSPs) and Partial Sequence Number Packets (PSNPs). LSPs contain information about the state and cost of links in the network, and are flooded periodically throughout the network. PSNPs are used to acknowledge receipt of LSPs and request retransmission of missing or corrupted LSPs. PSNPs contain only descriptions of LSPs, such as their sequence numbers and checksums3. IS-IS also uses another type of packet called Complete Sequence Number Packets (CSNPs), which are used to summarize the entire link-state database at regular intervals or when a new adjacency is formed. CSNPs are flooded periodically throughout the network and contain only descriptions of LSPs4. Therefore, PSNPs contain only descriptions of LSPs and CSNPs are flooded periodically.
References: 3:
https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/concept/routing-policy-is-is-p
4:
https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/concept/routing-policy-is-is-c
NEW QUESTION # 36
Exhibit
Which two statements about the configuration shown in the exhibit are correct? (Choose two.)
- A. This VPN connects customer sites that use the same AS number
- B. This VPN connects customer sites that use different AS numbers.
- C. A Layer 3 VPN is configured.
- D. A Layer 2 VPN is configured.
Answer: B,C
Explanation:
The configuration shown in the exhibit is for a Layer 3 VPN that connects customer sites that use different AS numbers. A Layer 3 VPN is a type of VPN that uses MPLS labels to forward packets across a provider network and BGP to exchange routing information between PE routers and CE routers. A Layer 3 VPN allows customers to use different routing protocols and AS numbers at their sites, as long as they can peer with BGP at the PE-CE interface. In this example, CE-1 is using AS 65530 and CE-2 is using AS 65531, but they can still communicate through the VPN because they have BGP sessions with PE-1 and PE-2, respectively.
NEW QUESTION # 37
CE-1 and CE-2 are part of a VPLS called Customer1. No connectivity exists between CE-1 and CE-2. In the process of troubleshooting, you notice PE-1 is not learning any routes for this VPLS from PE-2, and PE-2 is not learning any routes for this VPLS from PE-1.
Referring to the exhibit, which statement is correct?
- A. The instance type should be changed to l2vpn.
- B. The route distinguisher must match on PE-1 and PE-2.
- C. The route target must match on PE-1 and PE-2.
- D. The no-tunnel-services statement should be deleted on both PEs.
Answer: C
NEW QUESTION # 38
Your organization manages a Layer 3 VPN for multiple customers To support advanced route than one BGP community on advertised VPN routes to remote PE routers.
Which routing-instance configuration parameter would support this requirement?
- A. vrf-target import
- B. vrf-import
- C. vrf-export
- D. vrf-target export
Answer: D
Explanation:
The vrf-target export parameter is used to specify one or more BGP extended community attributes that are attached to VPN routes when they are exported from a VRF routing instance to remote PE routers. This parameter allows you to control which VPN routes are accepted by remote PE routers based on their import policies. You can specify more than one vrf-target export value for a VRF routing instance to support advanced route filtering or route leaking scenarios.
NEW QUESTION # 39
You are troubleshooting an issue for a customer site that uses 10.10.0.0/24 in AS 65224, but you see another AS in the AS path.
Referring to the exhibit, what is the cause of the problem?
- A. The local AS is receiving two equal cost routes to 10.10.0.0/24.
- B. The local AS is in the process of withdrawing the route from AS 65137.
- C. AS 65137 is advertising the 10.10.0.0/24 prefix.
- D. AS 65000 is pre-pending AS 65137 to route advertisements.
Answer: C
NEW QUESTION # 40
You are a network architect for a service provider and want to offer Layer 2 services to your customers You want to use EVPN for Layer 2 services in your existing MPLS network.
Which two statements are correct in this scenario? (Choose two.)
- A. VXLAN must be configured on all PE routers.
- B. EVPN uses Type 3 routes to join a multicast tree to flood traffic.
- C. EVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping
- D. Segment routing must be configured on all PE routers.
Answer: B,C
Explanation:
Explanation
EVPN is a technology that connects L2 network segments separated by an L3 network using a virtual Layer 2 network overlay over the Layer 3 network. EVPN uses BGP as its control protocol to exchange different types of routes for different purposes. Type 2 routes are used to advertise MAC address and IP address pairs learned using ARP snooping from the local CE devices. Type 3 routes are used to join a multicast tree to flood traffic such as broadcast, unknown unicast, and multicast (BUM) traffic.
NEW QUESTION # 41
You are responding to an RFP for a new MPLS VPN implementation. The solution must use LDP for signaling and support Layer 2 connectivity without using BGP. The solution must be scalable and support multiple VPN connections over a single MPLS LSP. The customer wants to maintain all routing for their private network.
In this scenario, which solution do you propose?
- A. BGP Layer 2 VPN
- B. translational cross-connect
- C. circuit cross-connect
- D. LDP Layer 2 circuit
Answer: D
NEW QUESTION # 42
You are a network architect for a service provider and want to offer Layer 2 services to your customers You want to use EVPN for Layer 2 services in your existing MPLS network.
Which two statements are correct in this scenario? (Choose two.)
- A. VXLAN must be configured on all PE routers.
- B. EVPN uses Type 3 routes to join a multicast tree to flood traffic.
- C. EVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping
- D. Segment routing must be configured on all PE routers.
Answer: B,C
Explanation:
EVPN is a technology that connects L2 network segments separated by an L3 network using a virtual Layer 2 network overlay over the Layer 3 network. EVPN uses BGP as its control protocol to exchange different types of routes for different purposes. Type 2 routes are used to advertise MAC address and IP address pairs learned using ARP snooping from the local CE devices. Type 3 routes are used to join a multicast tree to flood traffic such as broadcast, unknown unicast, and multicast (BUM) traffic.
NEW QUESTION # 43
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Juniper JN0-664 Certification Exam is a professional-level certification designed for individuals who are interested in pursuing a career in the service provider industry. Service Provider, Professional (JNCIP-SP) certification is designed to validate the skills and knowledge required to configure, troubleshoot, and maintain Juniper Networks' service provider routing and switching platforms.
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